Re: Which weight oil 10-40 or 20-50 for hot summer (archive)
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Posted by Don Stevens on July 21, 2001 at 22:26:45:
In Reply to: Which weight oil 10-40 or 20-50 for hot summers..I posted by donpeak on July 21, 2001 at 20:42:17:
(posted from: a020-1147.tamp.splitrock.net (63.254.86.131))
20W50 petroleum oil is better for older engines in the heat. 10W40 should not be a problem. Switch to synthetic and forget about temperature range. Run 10W40 synthetic all year
am confused that so many stores only carry 10-40 weights
and my manual says 20-50 is needed at temperatures over
90 degrees (F). and its hard to buy 20-50 in a lot of
brands.
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